PM72236: The exception, ConcurrentModificationException, occurs during session failover.

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APAR status

  • Closed as program error.

Error description

  • The exception, ConcurrentModificationException, occurs during
    HTTP session replication.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of WebSphere eXtreme Scale        *
    *                  for HTTP session replication.               *
    ****************************************************************
    * PROBLEM DESCRIPTION: Web applications call                   *
    *                      HttpSession.getAttributeNames() and     *
    *                      iterate through the resulting           *
    *                      Enumeration.                            *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    When using eXtreme Scale for HTTP session replication, if a
    web application calls the HttpSession.getAttributeNames() API,
    then iterates through the resulting Enumeration after an
    application server failover, a ConcurrentModificationException
    occurs.
    

Problem conclusion

  • The eXtreme Scale client code has been fixed to avoid
    ConcurrentModificationException exceptions after a
    getAttributeNames call is initiated.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM72236

  • Reported component name

    WS EXTREME SCAL

  • Reported component ID

    5724X6702

  • Reported release

    850

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-09-05

  • Closed date

    2012-10-24

  • Last modified date

    2012-10-24

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    WS EXTREME SCAL

  • Fixed component ID

    5724X6702

Applicable component levels

  • R850 PSY

       UP



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Document information


More support for:

WebSphere eXtreme Scale

Software version:

850

Reference #:

PM72236

Modified date:

2012-10-24

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